*Wataru Tanikawa¹, Tokuyama Hidekazu², Yuhji Yamamoto², Masafumi MURAYAMA², Kouki Tanaka², Akira Ijiri¹, Tatsuhiko Hoshino¹ (1.Japan Agency for Marine-Earth Science and Technology, Kochi Instutute for Core Sample Research, 2.Kochi University)

*Masafumi MURAYAMA¹, Wataru Tanikawa², Akira Ijiri², Tatsuhiko Hoshino², Takehiro Hirose², Toshiya Fujiwara², Kazuya Kitada², Kastuya Nejigaki³, Tokuyama Hidekazu⁴, Go-Ichiro Uramoto⁴, Kazuno Arai⁴, Kondo Yasuo³, Yuhji Yamamoto⁴, Research Member Kurodagoori⁴ (1.Faculty of Agriculture and Marine Science, Kochi University, 2.JAMSTEC, 3.Graduate School of Integrated Arts and Sciences, Kochi University, 4.Center for Advanced Marine Core Research, Kochi University)

*Akira Ijiri¹, Wataru Tanikawa¹, Masafumi MURAYAMA², Tokuyama Hidekazu² (1.Japan Agency for Marine-Earth Science and Technology, 2.Kochi University)

*Tomoaki Morishita^1,2,3, Gou Fujie², Shigeaki Ono², Makoto Yamano⁴, Kohtaro Ujiie⁵, Asuka Yamaguchi⁴, Akira Ijiri², Tomohiro Toki⁶, Takanori Kagoshima⁴, Masahiro Ishikawa², Ikuo Katayama⁷, Junichiro Kuroda⁴, Yohey Suzuki⁴ (1.Kanazawa University, 2.JAMSTEC, 3.Columbia University, 4.The University of Tokyo, 5.University of Tsukuba, 6.University of the Ryukyu, 7.Hiroshima University)

*Yuki Mitsutome¹, Tomohiro Toki¹, Shugo Kurahashi¹, Akira Ijiri², Juichiro Ashi³ (1.Faculty of Science, University of the Ryukyus, 2.Japan Agency for Marine-Earth Science and Technology, 3.Atmosphere and Ocean Research Institute, The University of Tokyo)

*Moe Kato¹, Akira Ijiri², Juichiro Ashi³ (1.College of Science and Engineering, Kanazawa University, 2.Japan Agency for Marine-Earth Science and Technology, 3.The Atmosphere and Ocean Research Institute, The University of Tokyo)

Ryoma Setoguchi¹, *Masafumi MURAYAMA¹, Akira Ijiri², Juichiro Ashi³, Takeyasu Yamagata⁴, Hiroyuki Matsuzaki⁴ (1.Faculty of Agriculture and Marine Science, Kochi University, 2.Kochi Institute for Core Sample Research, JAMSTEC, 3.The Atmosphere and Ocean Research Institute, The University of Tokyo , 4.The University Museum,The University of Tokyo)